System Test Pattern - Christie Solaria CP2220 User Manual

Section 3: Operation
Frame Rate N:M - Sets how many frames to display per number of frames that form one complete image.
This defines triple flash, where each image is shown three times to ensure a smooth, jitter free presentation.
Other settings will still show 3D, but without as crisp a presentation.
3D Sync Polarity - This setting changes the sense of the synchronization signal from the projector. Changing it
will reverse left and right images on the screen.
Dark Time - For 3D applications, systems typically need a period of time where the image projected on the
screen is black. Without some dark time, the presentation will appear to smear because this black or "dark
time" is used to switch the mechanism that controls what a viewer's left eye and right eye sees. Dark times set
too short may show on screen as color and contouring errors. The projector will always produce at least 380
microseconds of dark time, so even if this setting is zero, a reasonably good presentation will result. Dark Time
differs based on the 3D hardware system implemented.
Table 3.46 Suggested Dark Time Intervals per 3D Hardware System
3D System
RealD
Dolby - Wheel Type 4:2*
Dolby - Wheel Type 5:2*
Dolby - Wheel Type 6:2*
MasterImage
Xpand
* Dolby recommends dark time settings that are determined by the diameter of the wheel used in the projector.
NOTE: Check with 3D System Manufacturer for the most up-to-date dark time values for optimal settings.
Output Delay - This defines the delay between the beginning of the dark time and the synchronization signal
sent to the control module.

3.8.4 System Test Pattern

The CP2220 includes several test patterns for use by projectionists during pre-show diagnostic checks to verify
that the system is functioning properly.
1. In the Channel Setup: 3D Control window, click the 3D Test Patterns button and select a pattern.
2. With this image projected on a silver screen and the 3D hardware in place, put on a pair of 3D cinema eye
wear.
3. While looking at the on-screen image, close your left eye and look at the image through your right eye.
Switch when the image alternates.
3D Test Pattern
RGB-12bit -3D Dynamic Range
RGB-12bit-3D Four Quadrant
RGB-12bit-3D Full White
RGB-12bit-3D Half Descending
RGB-12bit-3D Horizontal Ramp
RGB-12bit-3D L-Pattern
3-90
Dark Time
(in microseconds)
430
1142
920
780
>1157
700
Action
Alternates between 2 images shown in Figure 3-71.
Alternates between 2 images shown in Figure 3-72.
Alternates between 2 100% white images.
Alternates between 4 images shown in Figure 3-73.
Alternates between 2 horizontal ramp images.
Alternates between 2 images shown in Figure 3-74.
CP2220 User Manual
020-100420-06 Rev. 1 (03-2011)